CN103213029A - Cooling method of electric spindle for high-speed turning center, and internal and external cooled electric spindle - Google Patents
Cooling method of electric spindle for high-speed turning center, and internal and external cooled electric spindle Download PDFInfo
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- CN103213029A CN103213029A CN2013101157602A CN201310115760A CN103213029A CN 103213029 A CN103213029 A CN 103213029A CN 2013101157602 A CN2013101157602 A CN 2013101157602A CN 201310115760 A CN201310115760 A CN 201310115760A CN 103213029 A CN103213029 A CN 103213029A
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Abstract
The invention relates to a cooling structure of an electric spindle component for a high-speed turning center. The cooling structure is characterized in that a bearing water jacket is arranged between a built-in servo motor stator and a box body, and a cooling cavity groove and a spiral fluid channel are processed on the external circle of the bearing water jacket; and a spiral water jacket is arranged on a shell of the built-in servo motor stator. A cooling water inlet, the bearing water jacket, a built-in servo motor stator water jacket and a cooling water outlet form a closed external cooling circulating system together. A peripheral cooling water inlet joint, a high-speed rotary joint, a spindle, a flange and a peripheral cooling water return joint form a closed internal cooling circulating system together. Cooling water controlled by constant temperature flows through the two cooling circulating systems to simultaneously cool fixed parts of the electric spindle component such as the built-in servo motor stator and a spindle bearing outer race as well as high-speed rotary parts such as a motor rotor, a bearing inner race, and inner and outer ways of the spindle, so that the temperature rise of the electric spindle component is reduced, the thermal stability and the work precision of a high-speed lathe are improved, and the service life of a servo motor is prolonged.
Description
Technical field
The present invention relates to electrocardio spindle unit cooling structure in a kind of high-speed turning.
Background technology
At present, existing high-speed turning center main motion structure mainly is made up of main shaft, built-in type servomotor, main shaft bearing and casing.And temperature rise is important indicator of electric spindle unit, lathe is under high speed and heavily loaded condition of work, the heating of built-in type servomotor and main shaft bearing running is directly passed to parts such as casing and main shaft, cause the displacement of the lines and the angular displacement of main-shaft axis, influence machining accuracy, even cause bearing running hot and burn out.
The electricity main shaft heating mainly generate heat and cause by the iron loss heating of the heating of stator winding and rotor and bearing rotation, at heating problem, popular several solutions are at present: (1) is given on built-in type servo motor stator shell and the main shaft bearing outer ring increases water jacket, to take away the heat that produces when rotation of built-in type servomotor and main shaft bearing are worked; (2) at electric main shaft shell and electric main shaft axle core place the cooling heat pipe is set respectively, the condensation end of heat pipe is provided with fin, by cooling air cold sink, reaches the effect of taking away the spindle unit heat.But above structure has the following disadvantages when the high-speed turning center applications: in the scheme (1), this water cooling mode that increases water jacket on built-in type servo motor stator shell and the main shaft bearing outer ring of giving only cools off servo motor stator and main shaft bearing outer ring, electric spindle rotor and main shaft bearing inner ring are not cooled off, this type of cooling will cause spindle unit cold outside and hot inside, make main shaft because thermal expansion causes displacement of the lines and angular displacement on the one hand, influence machining accuracy, make main shaft bearing outer ring temperature on the low side on the other hand, the inner ring temperature drift, cause the bearing pre-tightened amount to increase, aggravated the heating of bearing.In the scheme (2), at electric main shaft shell and electric main shaft axle core place the cooling heat pipe is set respectively, though can play cooling effect to the stator and the rotor heating of electric main shaft to a certain extent, but because this kind type of cooling is not directly to freeze by liquid cooling medium, but by the cooling air heat exchange, reach the cooling purpose, the hot exchange power of heat pipe is limited in addition, make this cooling scheme can not effectively solution high-speed turning in the heat dissipation problem that brings of long-time, the powerful processing of electrocardio spindle unit.
Summary of the invention
The objective of the invention is to solve the prior art weak point, by the present invention, on electric main shaft shell and main shaft bearing outer ring, increase peripheral water jacket, simultaneously cooling-water duct is set in main shaft inside, realization maintains static part to electric spindle unit and cools off simultaneously as the inside and outside two-way of built-in type servo motor stator, main shaft bearing outer ring and high speed rotating part such as rotor, bearing inner race, main shaft, the effectively whole temperature rise of the electric spindle unit of control reaches and reduces the influence of thermal deformation to high-speed turning center machining accuracy.
The technical solution adopted for the present invention to solve the technical problems is: cylinder-shaped bearing water jacket of design between built-in type servomotor shell and casing, this bearing water jacket external diameter cooperates assembling with the casing endoporus, and internal diameter cooperates with spiral water jacket cylindrical on the built-in type servo motor stator.Stator water jacket external diameter surface is processed with a spiral fluid passageway, the built-in type servo motor rotor is packed on the main shaft by the interference of hot charging mode, there is pull bar main shaft inside, the pull bar front end is connected with chuck, and the rear end is connected with high-speed joint, and pull bar inside is provided with deep hole, the deep hole end of pull bar has some apertures, main spindle front bearing is installed on the anterior endoporus of bearing water jacket, and the rear bearing block of rear bearing block and bearing water jacket rear end tightens together, and is used to install rear bearing.Processing one a cooling chamber groove and a spiral fluid passageway on the external diameter face of cylinder of bearing water jacket.Cooling fluid is through the thermostat thermostatic control during work, divide inside and outside two-way to enter electric spindle unit inside then, peripheral one road cooling water enters bearing water jacket cooling chamber groove from import, cooling fore bearing outer ring, enter the water jacket spiral fluid passageway afterwards, flow into the spiral water jacket of stator again, flow through multi-circle spiral flow, cooling built-in type servo motor stator, get back to thermostat from casing cooling fluid outlet outflow after utilizing heat-conduction principle to absorb heat, inner one road cooling water is entered by water supply connector, the high-speed joint of flowing through enters pull bar inside, flow through again cooling-water duct between pull bar and main shaft endoporus, cooling main shaft, and then cooling and main shaft close fit rotor together, bearing inner race, utilize heat-conduction principle to absorb heat after, flow out from the flange delivery port, get back to thermostat through backwater joint.This cooling structure has effectively shifted the caloric value of electric spindle unit owing to adopt inside and outside 2 road cooling waters to cool off simultaneously, better controls the whole temperature rise of electric spindle unit.The characteristics of maximum of the present invention are to cool off simultaneously from electric spindle unit inner high speed rotating part maintaining static the part cooling from electric spindle unit periphery when, and the employing of high speed rotating part is the directly mode of cooling of cooling liquid, the efficient height, remedy the deficiency that existing structure exists when the high-speed turning center applications, solved a difficult problem of in electric spindle unit high speed rotating part, arranging the recirculated cooling water road.
The invention has the beneficial effects as follows, can cool off simultaneously the inside and outside circle of electric spindle rotor, stator, main shaft and main shaft bearing, reduce the temperature rise of electric spindle unit more effectively, further promote machine finish, improve the service life of main shaft bearing and built-in type servomotor.
Description of drawings
Fig. 1 is a structure diagram of the present invention.
Fig. 2 is implementation figure of the present invention.
Among Fig. 1: 1. peripheral cooling water inlet, 2. peripheral coolant outlet, 3. main shaft casing, 4. bearing water jacket, 5. main shaft, 6. built-in type servo motor stator, 7 built-in type servo motor rotors, 8. fore bearing, 9. rear bearing, 10 rear bearing blocks, 11. sealing rings, 12. stator water jackets, 13. pull bars, 14. chucks, 15. inner cooling water water supply connectors, 16. high-speed joints, 17. flanges, 18. inner cooling water backwater joints.
Among Fig. 2: 1. peripheral cooling water inlet, 2. peripheral coolant outlet, 3. main shaft casing, 4. bearing water jacket, 5. main shaft, 6. built-in type servo motor stator, 7 built-in type servo motor rotors, 8. fore bearing, 9. rear bearing, 10 rear bearing blocks, 11. sealing rings, 12. stator water jackets, 13. pull bars, 14. chucks, 15. inner cooling water water supply connectors, 16. high-speed joints, 17. flanges, 18. inner cooling water backwater joints.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
According to Fig. 1 and Fig. 2 as can be known, cooling structure of the present invention is mainly concerned with: peripheral cooling water inlet 1, peripheral coolant outlet 2, main shaft casing 3, bearing water jacket 4, main shaft 5, built-in type servo motor stator 6, built-in type servo motor rotor 7, fore bearing 8, rear bearing 9, rear bearing block 10, sealing ring 11, stator water jacket 12, pull bar 13, chuck 14, inner cooling water water supply connector 15, high-speed joint 16, flange 17, inner cooling water backwater joint 18.Wherein cylinder-shaped bearing water jacket 4 external diameters cooperate assembling with casing 3 endoporus.Built-in type servo motor stator water jacket 12 is matched with bearing water jacket 4 inwalls, and the built-in type servo motor stator water jacket 12 external diameter faces of cylinder are processed with a spiral fluid passageway, built-in type servo motor rotor 7 is packed on the main shaft 5 by the interference of hot charging mode, there is pull bar 13 main shaft 5 inside, pull bar 13 front ends are connected with chuck 14, pull bar 13 rear ends are connected with high-speed joint 16, pull bar 13 inside are provided with deep hole, the deep hole end of pull bar 12 has some apertures, fore bearing 8 is installed on the anterior endoporus of bearing water jacket 4, rear bearing block 10 tightens together with the rear bearing block 10 of bearing water jacket 4 rear ends, is used to install rear bearing 9.Processing one a cooling chamber groove and a spiral fluid passageway on the external diameter face of cylinder of bearing water jacket 4, two ends adopt 11 pairs of casings of sealing ring and water jacket in conjunction with sealing.
Cooling fluid is through the thermostat thermostatic control during work, divide inside and outside two-way to enter electric spindle unit inside then, periphery one road enters the cooling chamber groove of bearing water jacket 4 from cooling water inlet 1, enter the spiral fluid passageway of water jacket 4 afterwards, flow into the spiral fluid passageway of built-in type servo motor stator water jacket 12 again, flow through multi-circle spiral flow, after peripheral coolant outlet 2 flows out, get back to thermostat after utilizing heat-conduction principle to absorb heat.The inner cooling water water supply connector 15 of another route enters, the high-speed joint 16 of flowing through enters pull bar 13 inside, flow through again cooling-water duct between pull bar 13 and main shaft 5 endoporus, after utilizing heat-conduction principle to absorb heat, flow out from flange 17 delivery ports, get back to thermostat through inner cooling water backwater joint 18.This cooling structure has effectively shifted the running caloric value of built-in type servo motor rotor, stator and main shaft bearing, and cooling fluid flows back to thermostat after absorbing heat, recycles after the release heat.
Claims (4)
1. electrocardio main shaft cooling means in the high-speed turning, it is characterized in that on electric main shaft shell and main shaft bearing outer ring, increasing peripheral water jacket, simultaneously cooling-water duct is set in main shaft inside, electric spindle unit is maintained static part in realization and the high speed rotating part realizes that inside and outside two-way cools off simultaneously, the effectively whole temperature rise of the electric spindle unit of control reaches and reduces the influence of thermal deformation to high-speed turning center machining accuracy.
2. electrocardio main shaft cooling means in a kind of high-speed turning as claimed in claim 1 is characterized in that electric spindle unit maintains static part including but not limited to as lower member: built-in type servo motor stator, main shaft bearing outer ring; The high speed rotating part includes but not limited to as lower member: rotor, bearing inner race, main shaft.
3. realize the electric main shaft of inside and outside cooling of method as claimed in claim 1 or 2, it is characterized in that: design one bearing water jacket (4) between built-in type servo motor stator (6) and casing (3), bearing water jacket (4) cylindrical has been cut cooling chamber groove and screw type fluid passage, has spiral water jacket (12) on built-in type servo motor stator (6) shell; Peripheral cooling water inlet (1), bearing water jacket (4), built-in type servo motor stator water jacket (12), peripheral coolant outlet (2) constitute the outer cooling circulatory system of a sealing jointly; In addition, there is pull bar (13) main shaft (5) inside, and pull bar (13) inside is provided with deep hole, and the deep hole end of pull bar (13) has some apertures; Constituted the interior cooling recirculation system of a sealing jointly by inner cooling water water supply connector (15), high-speed joint (16), pull bar (13), main shaft (5), flange (17), inner cooling water backwater joint (18).
4. according to the electric main shaft of inside and outside cooling of claim 2 or 3 described methods, it is characterized in that built-in type servo motor stator water jacket (12) is matched with bearing water jacket (4) inwall, and built-in type servo motor stator water jacket (12) the external diameter face of cylinder is processed with a spiral fluid passageway, built-in type servo motor rotor (7) is packed on the main shaft (5) by the interference of hot charging mode, there is pull bar (13) main shaft (5) inside, pull bar (13) front end is connected with chuck (14), pull bar (13) rear end is connected with high-speed joint (16), pull bar (13) inside is provided with deep hole, the deep hole end of pull bar (12) has some apertures, fore bearing (8) is installed on the anterior endoporus of bearing water jacket 4, rear bearing block (10) tightens together with the rear bearing block (10) of bearing water jacket 4 rear ends, is used to install rear bearing (9); Processing one a cooling chamber groove and a spiral fluid passageway on the external diameter face of cylinder of bearing water jacket (4), two ends adopt sealing ring (11) that described casing and the combination of described water jacket are sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115760.2A CN103213029B (en) | 2013-04-03 | 2013-04-03 | A kind of high-speed turning center electro spindle cooling means and inside and outside cooling electro spindle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310115760.2A CN103213029B (en) | 2013-04-03 | 2013-04-03 | A kind of high-speed turning center electro spindle cooling means and inside and outside cooling electro spindle |
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| CN103213029A true CN103213029A (en) | 2013-07-24 |
| CN103213029B CN103213029B (en) | 2016-08-03 |
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| CN201310115760.2A Active CN103213029B (en) | 2013-04-03 | 2013-04-03 | A kind of high-speed turning center electro spindle cooling means and inside and outside cooling electro spindle |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439518A (en) * | 2014-10-30 | 2015-03-25 | 东莞市青麦田数码科技有限公司 | Internal cooling trepanning machine |
| WO2015074403A1 (en) * | 2013-11-20 | 2015-05-28 | 广州市昊志机电股份有限公司 | A high-speed air-bearing electric spindle |
| CN104942649A (en) * | 2015-07-21 | 2015-09-30 | 安阳工学院 | Internal and external cooling structure for high-speed motorized spindle |
| CN105562726A (en) * | 2016-03-12 | 2016-05-11 | 陕西秦川精密数控机床工程研究有限公司 | Special servo electric spindle for ultrasonic cutting machining |
| CN106001628A (en) * | 2016-07-28 | 2016-10-12 | 深圳市创世纪机械有限公司 | Numerical control machine tool main shaft structure |
| CN106041635A (en) * | 2016-07-22 | 2016-10-26 | 宁波海天精工股份有限公司 | Thermal insulation cooling mechanism of electric main shaft bearing pedestal |
| CN106541298A (en) * | 2016-12-07 | 2017-03-29 | 宁波海天精工股份有限公司 | A kind of piston axle construction for being applied to internally cooled-spindle |
| CN106685129A (en) * | 2017-01-10 | 2017-05-17 | 西安交通大学 | High speed high precision electric main shaft based on single loop thermosyphon cooling structure |
| CN107081438A (en) * | 2016-02-16 | 2017-08-22 | 协鸿工业股份有限公司 | Main shaft device with cooling circuit |
| CN107160236A (en) * | 2017-06-06 | 2017-09-15 | 西安交通大学 | A kind of electro spindle based on rotating shaft end face impinging cooling |
| CN108746675A (en) * | 2018-08-22 | 2018-11-06 | 河南理工大学 | Two-way circulating cooling ultrasound electric principal shaft transmission device based on water-cooling pattern |
| CN109626378A (en) * | 2019-02-28 | 2019-04-16 | 厦门佰事兴新材料科技有限公司 | A kind of polycrystalline silicon reducing furnace electrode |
| CN110757245A (en) * | 2019-11-07 | 2020-02-07 | 哈尔滨理工大学 | Device for double cooling of high-speed electric spindle and using method |
| CN111112652A (en) * | 2019-12-11 | 2020-05-08 | 珠海格力电器股份有限公司 | Internal and external cooling system, cooling method, electric spindle and machining center |
| CN112383171A (en) * | 2020-10-13 | 2021-02-19 | 速珂智能科技（上海）有限公司 | Oil-cooling heat dissipation type electric vehicle motor |
| CN112893888A (en) * | 2021-01-22 | 2021-06-04 | 珠海格力智能装备有限公司 | Cooling structure, electric spindle and machine tool |
| CN113770396A (en) * | 2021-09-13 | 2021-12-10 | 浙江景耀数控科技有限公司 | Hollow inner-cooling high-speed boring and milling main shaft head |
| CN113953851A (en) * | 2021-11-23 | 2022-01-21 | 苏州陈那自动化技术有限公司 | Spindle with temperature-controllable rotating shaft |
| CN114433923A (en) * | 2022-03-10 | 2022-05-06 | 纽威数控装备(苏州)股份有限公司 | Full-automatic right angle milling head of central play water of disconnect-type rotary joint |
| CN114536094A (en) * | 2022-01-26 | 2022-05-27 | 中国航空制造技术研究院 | Built-in cooling system |
| CN114939831A (en) * | 2022-07-26 | 2022-08-26 | 江苏京创先进电子科技有限公司 | Temperature control system and temperature control method for cooling water and cutting fluid |
| CN117415726A (en) * | 2023-09-26 | 2024-01-19 | 上海星合机电有限公司 | High-speed motorized spindle with internal circulation water cooling structure |
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| CN203527144U (en) * | 2013-04-03 | 2014-04-09 | 宝鸡忠诚机床股份有限公司 | Internal-external cooling electric main shaft of high-speed turning center |
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| WO2015074403A1 (en) * | 2013-11-20 | 2015-05-28 | 广州市昊志机电股份有限公司 | A high-speed air-bearing electric spindle |
| CN104439518A (en) * | 2014-10-30 | 2015-03-25 | 东莞市青麦田数码科技有限公司 | Internal cooling trepanning machine |
| CN104942649A (en) * | 2015-07-21 | 2015-09-30 | 安阳工学院 | Internal and external cooling structure for high-speed motorized spindle |
| CN107081438A (en) * | 2016-02-16 | 2017-08-22 | 协鸿工业股份有限公司 | Main shaft device with cooling circuit |
| CN105562726A (en) * | 2016-03-12 | 2016-05-11 | 陕西秦川精密数控机床工程研究有限公司 | Special servo electric spindle for ultrasonic cutting machining |
| CN105562726B (en) * | 2016-03-12 | 2017-06-30 | 陕西秦川精密数控机床工程研究有限公司 | A kind of ultrasonic cutting processes dedicated servo electro spindle |
| CN106041635A (en) * | 2016-07-22 | 2016-10-26 | 宁波海天精工股份有限公司 | Thermal insulation cooling mechanism of electric main shaft bearing pedestal |
| CN106041635B (en) * | 2016-07-22 | 2018-01-05 | 宁波海天精工股份有限公司 | A kind of heat-insulated cooling body of electric mainshaft bearing seat |
| CN106001628A (en) * | 2016-07-28 | 2016-10-12 | 深圳市创世纪机械有限公司 | Numerical control machine tool main shaft structure |
| CN106541298A (en) * | 2016-12-07 | 2017-03-29 | 宁波海天精工股份有限公司 | A kind of piston axle construction for being applied to internally cooled-spindle |
| CN106541298B (en) * | 2016-12-07 | 2018-08-28 | 宁波海天精工股份有限公司 | A kind of piston axle construction applied to internally cooled-spindle |
| CN106685129A (en) * | 2017-01-10 | 2017-05-17 | 西安交通大学 | High speed high precision electric main shaft based on single loop thermosyphon cooling structure |
| CN107160236A (en) * | 2017-06-06 | 2017-09-15 | 西安交通大学 | A kind of electro spindle based on rotating shaft end face impinging cooling |
| CN108746675A (en) * | 2018-08-22 | 2018-11-06 | 河南理工大学 | Two-way circulating cooling ultrasound electric principal shaft transmission device based on water-cooling pattern |
| CN109626378A (en) * | 2019-02-28 | 2019-04-16 | 厦门佰事兴新材料科技有限公司 | A kind of polycrystalline silicon reducing furnace electrode |
| CN109626378B (en) * | 2019-02-28 | 2024-02-20 | 厦门佰事兴新材料科技有限公司 | Electrode of polysilicon reduction furnace |
| CN110757245A (en) * | 2019-11-07 | 2020-02-07 | 哈尔滨理工大学 | Device for double cooling of high-speed electric spindle and using method |
| CN111112652A (en) * | 2019-12-11 | 2020-05-08 | 珠海格力电器股份有限公司 | Internal and external cooling system, cooling method, electric spindle and machining center |
| CN112383171A (en) * | 2020-10-13 | 2021-02-19 | 速珂智能科技（上海）有限公司 | Oil-cooling heat dissipation type electric vehicle motor |
| CN112383171B (en) * | 2020-10-13 | 2021-11-19 | 速珂智能科技（上海）有限公司 | Oil-cooling heat dissipation type electric vehicle motor |
| CN112893888A (en) * | 2021-01-22 | 2021-06-04 | 珠海格力智能装备有限公司 | Cooling structure, electric spindle and machine tool |
| CN113770396B (en) * | 2021-09-13 | 2022-11-08 | 浙江景耀数控科技有限公司 | Hollow inner-cooling high-speed boring and milling spindle head |
| CN113770396A (en) * | 2021-09-13 | 2021-12-10 | 浙江景耀数控科技有限公司 | Hollow inner-cooling high-speed boring and milling main shaft head |
| CN113953851A (en) * | 2021-11-23 | 2022-01-21 | 苏州陈那自动化技术有限公司 | Spindle with temperature-controllable rotating shaft |
| CN114536094A (en) * | 2022-01-26 | 2022-05-27 | 中国航空制造技术研究院 | Built-in cooling system |
| CN114536094B (en) * | 2022-01-26 | 2023-03-14 | 中国航空制造技术研究院 | Built-in cooling system |
| CN114433923A (en) * | 2022-03-10 | 2022-05-06 | 纽威数控装备(苏州)股份有限公司 | Full-automatic right angle milling head of central play water of disconnect-type rotary joint |
| CN114939831A (en) * | 2022-07-26 | 2022-08-26 | 江苏京创先进电子科技有限公司 | Temperature control system and temperature control method for cooling water and cutting fluid |
| CN117415726A (en) * | 2023-09-26 | 2024-01-19 | 上海星合机电有限公司 | High-speed motorized spindle with internal circulation water cooling structure |
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